The Women's 100 metre butterfly S10 swimming event at the 2004 Summer Paralympics was competed on 20 September. It was won by Magdalena Szczepinska, representing .
1st round
Qualified for final round
Heat 1 20 Sept. 2004, morning session Rank Athlete Time Notes1 1:14.91 2 1:20.81 3 1:21.66 4 1:38.61
Heat 2 20 Sept. 2004, morning session Rank Athlete Time Notes1 1:12.64 2 1:13.69 3 1:16.89 4 1:20.98 5 1:25.77
Final round
20 Sept. 2004, evening session Rank Athlete Time Notes 1:12.30 1:13.06 1:14.66 4 1:17.96 5 1:19.93 6 1:20.73 7 1:22.51 8 1:25.68
References